#include<iostream>
#include<vector>
using namespace std;
vector<int> mul(vector<int> &A, int b){
    vector<int> C;
    int t = 0;
    for(int i = 0; i < A.size() || t; i ++){
        if(i < A.size()) t += A[i] * b;
        C.push_back(t % 10);
        t /= 10;
    }
    while(C.size() > 1 && C.back() == 0) C.pop_back();
    return C;
}
int main(){
    string a;
    cin >> a;
    int b;
    cin >> b;
    vector<int> A;
    for(int i = a.length() - 1; i >= 0; i --) A.push_back(a[i] - '0');
    auto C = mul(A, b);
    for(int i = C.size() - 1; i >= 0; i --) cout << C[i];
    return 0;
}